Conformation Isomerism In Poly(n-alkyl Laurolactams) By Proton And Carbon-13 NMR

Autor:	S. W. Shalaby, G. E. Babbitt, R. L. Lapinski
Rok vydání:	1974
Předmět:	musculoskeletal diseases chemistry.chemical_classification Proton Stereochemistry education chemistry.chemical_element Polymer Carbon-13 NMR Atomic and Molecular Physics and Optics Analytical Chemistry chemistry.chemical_compound chemistry Amide Laurolactam Carbon Spectroscopy Alkyl
Zdroj:	Spectroscopy Letters. 7:203-210
ISSN:	1532-2289 0038-7010
DOI:	10.1080/00387017408067237
Popis:	The amide groups of poly(N-methyl laurolactam), poly(N-ethyl laurolactam) and poly(N-benzyl laurolactam) were shown by PMR and CMR to acquire both the anti and syn conformations in CDCl3 at 30°C. At 80°C, the PMR signals of the two conformations collapsed to one signal, at an intermediate chemical shift. The anti - syn PMR and/or CMR signals were displayed by carbon nuclei and protons of all the groups which are directly bonded to the amide moieties in the three polymers. The magnetic non-equivalence of the carbon nuclei and protons of a number of other groups which are not directly linked to the amide functions was also demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f2ed6ba7c70adb3f5de39796590e6535 https://doi.org/10.1080/00387017408067237 Zobrazit plný text záznamu